Sequence Similarity : Non-homologous sequences (<30%) SEQUENCE SIMILARITY (%) 2pgnA 4r3uA 5cpgA 5noeA 2pgnA 100 91 70 83 4r3uA 100 100 74 100 5cpgA 66 71 100 28 5noeA 78 95 85 100 FOLD SIMILARITY (Z-SCORE) 2pgnA 4r3uA 5cpgA 5noeA 2pgnA 61.8 0 0 1.4 4r3uA 1 68 0 0 5cpgA 0 0 29.4 0 5noeA 1.3 0 0 62.5